diff --git a/src/cn-cbor.c b/src/cn-cbor.c
index b5759e6..9093537 100644
--- a/src/cn-cbor.c
+++ b/src/cn-cbor.c
@@ -51,7 +51,7 @@
 
 #define ntoh8p(p) (*(unsigned char*)(p))
 
-#ifndef CBOR_ALIGN_MEMREADS
+#ifndef CBOR_ALIGN_READS
 #define ntoh16p(p) (ntohs(*(unsigned short*)(p)))
 #define ntoh32p(p) (ntohl(*(unsigned long*)(p)))
 #else
@@ -66,7 +66,7 @@
     memcpy(&tmp, p, sizeof(tmp));
     return ntohl(tmp);
 }
-#endif
+#endif /* CBOR_ALIGN_READS */
 
 static uint64_t ntoh64p(unsigned char *p) {
   uint64_t ret = ntoh32p(p);